Questions About Climbing Hydrangeas

My very old climbing hydrangea was growing on our garage. A neighbor said it had been planted 30 years ago. Unfortunately, during this snow storm, most of it came off. It is still partially connected. What should I do?

Answered by Nikki on February 22, 2011Certified Expert

A.

As long as the vines are intact, I would recommend simply tying it back onto the surface, if you can. If it is against the surface, it will re-attach itself. If the vines are damaged or you cannot somehow set it against the surface, it will most likely need to be cut back.

I have two climbing Hydrangeas on two different fences planted almost side by side. One of these bloom very well every year, while the other one has never had even one bloom on it in three years. The one that blooms resembles a lace-cap hydrangea in appearance and is quite lovely. I have no idea why the one plant simply will not bloom at all. Both plants receive the the exact amount of light and water since they are both planted in the same location.

Various fungal spots can develop on hydrangea leaves and are normally triggered by too much or too little water. Spots also develop when hot sun strikes wet foliage. Water only when the soil is dry and use drip irrigation, if possible. You want the water to soak into the soil and not get on the foliage, which can lead to these fungal problems. You can also retain soil moisture by using mulch. For the fungus, treat the shrub with a neem oil foliar spray.

I planted a climbing hydrangea 3 years ago. While the leaves appear to be very healthy, and it puts out new shoots and is planted in a shady, but well light area (perfect), it has never produced a flower! I do not know if it is white or pastel. It is very healthy. I feed it Miracle Grow for blooms; however, it never produces a bloom. It came from Lowes. I never have pruned the plant.

Answered by Nikki on May 31, 2011Certified Expert

A.

Climbing hydrangea sometimes can take a few years to get blooming after being plants. I would give it some phosphorus though to see if you can get it jump started. Bone meal is a great source of phosphorus.